I worked in a place similar to this once. It was an inbound-only place that took on work for other companies. Most of it during the daytime was just taking messages for offices/companies not large enough to need a dedicated receptionist, but it was also a 24/7 place. in the evenings you'd get a mixture of calls to mail order lines (remember Atittude Clothing, that sold goffick clothes in the back of Kerrang? they were one) and emergency call out services for various councils and companies.

i used to do the occasional night shift, which were 11pm to 7am, and totally solo. you'd get MAYBE one call an hour, so I worked out that if I put the phone on maximum, and then put my head on the desk next to it, I could sleep away quite nicely and wouldn't miss a call.

once i turned up drunk and watched an entire Jean Claude van Damme movie on BBC1 without getting a phonecall. when i realised afterwards i'd been paid to watch a stupid action movie whilst drunk, well, glorious moment.